CAN BUS trouble

Your answer helped me a lot.

Is there a problem if i use an isolated transceiver with shared ground reference?

An isolated transceiver will have two different ground references. One for the bus side and another for the device side.

It is correct to connect the ODrive ground to the bus-side GND of the transceiver - but if it is isolated, then that will not be connected to the USB ground.

It’s fine to connect the two grounds together on the isolated CAN transceiver.

  1. If you connect the grounds at a far away star point, then the isolation helps break the ground loop. This should work well.
  2. If you connect the grounds right by the transceiver it basically becomes a regular non-isolated transceiver, and then those rules apply.
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It worked!!!
Odrive forever!!!
all thanks to you and madcow!

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I really appreciate everything you’ve done!!

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